I have a question regarding Exchange 2003 mailbox logins. When I open System Manager and view the mailboxes, I see the mailboxes were "Last Logged on by" field. However, there are some mailboxes that look like it was logged into by a different user. Is this a bug in Exchange 2003? OR is this data accurate? It seems that it should list only the mailbox owners, backup accounts or administrator accounts and not other user accounts who should not have access. This has puzzled me for some time. I thank you for your help in advance!!